Help needed - car won’t crank after tune

[Maxhouse97]

Hi - my car won’t crank after a 30 minute remote tuning session. I have an antigravity lithium ion battery. I had it hooked up to a tender while the tuning session was ongoing because I was aware that the battery could get drained over that length of time. However, after trying to start the car, I get a click, but no crank. Hassan from HTE tuning tells me this is not related to software, but must be an electrical issue. Trying to determine what could’ve gone wrong to lead to no cranking. The only really real thing I missed it was the O2 sensors, I did not touch anything related to the starter. Might also be a ground, but I don’t recall disconnecting any grounds. Any ideas?

I also suspected it might have something to do with the remote start feature on the antigravity battery. I hit the reset button on top of the battery, but that didn’t fix the problem. I had power and lights throughout the whole session. Everything as normal.

[Maxhouse97]

FYI I had Hassan code out EWS … I’ve never had a EWS issue before. He said it’s not that. I will pull codes tomorrow to see what it says.

[SteelGreyM]

Would be quite the coincidence but if you have an inkling of an idea that it's electrical easiest thing to do is swap the battery for a fresh one and then begin diagnosing after that's done.

[sapote]

Measure voltage at the front jumper posts.

[Maxhouse97]

Yes going to measure voltage tonight. Don’t have a spare battery but that may the last resort.

[SteelGreyM]

Yes going to measure voltage tonight. Don't have a spare battery but that may the last resort.

Interstate sells used (perfectly good) batteries for $60 if you don't want to spend $200+

[Bebop]

Interstate sells used (perfectly good) batteries for $60 if you don't want to spend $200+

Really?

[SteelGreyM]

Really?

The one by me does

[332]

my bet is the battery

[Maxhouse97]

Battery checks good

[Maxhouse97]

Have an EWS fault but Hassan tells me this is normal after EWS gets coded out. He is convinced it’s the starter. I’ve never had a problem with the starter before but I trust his experience, so will look into that. I didn’t touch the wires near the starter but maybe I got unlucky and had it die at the same time.

[Maxhouse97]

One thing that does intrigue me, my car is a SMG to manual swap. See what it says about SMG and the gear selector. I have no idea what the previous owner coded (if anything) to defeat this.

Anyone with a SMG swap know? FYI before this I could start my car without pushing in the clutch.

Regardless next step is researching a starter diagnosis/replacement.

[BMWfanz]

Can you send a video? If starter doesn't crank- it's manual issue, not due to software

[Maxhouse97]

Found a wiring issue, did not reattach the power cable that goes across the engine from the drivers side to the passenger side into the drug bin positive terminal. This is what provides power to the starter. Completely my fault … thanks for all the help.

[0doyle]

You didn't pay Hassan for the wireless starter upgrade?